BACKGROUND AND OBJECTIVES A 1-year multicenter prospective randomized controlled study was conducted on the effects of vitamin E-bonded polysulfone dialyzers on erythropoiesis-stimulating agent response in hemodialysis patients. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Major inclusion criteria were use of high-flux polysulfone dialyzers with 50-70 ml/min β2-microglobulin clearance over 3...

Membrane separation is known as an efficient technique for the oily wastewater treatment. Therefore, in the present study, sulfonated poly (ether ether ketone) (SPEEK) was introduced into the polysulfone (PSF) solution in order to enhance the hydrophilicity and the membrane structure for the oil–water separation. The hollow fiber membranes were fabricated via a phase-inversion process. The memb...

A new method of electroprometry has been proposed that allows continuous investigation extended sections a hollow fiber membrane. Samples polysulfone membranes with different porous structures were obtained: finger-shaped and spongy. These examined on laboratory electroprometric apparatus scanning along the length membrane sample at high voltage 15 kV. Defects detected in these by electroporome...

Membrane potentials of polysulfonated cation exchange membranes (unsupported polysulfone, SA3S and polyester supported polysulfone, SA3T) for KCl, NaCl and LiCl solutions using Ag/AgCl electrodes were measured. The measurements were carried out for, KCl SA3S or SA3T MCL, (M: K, Na and Li) systems. The concentration of salt (KCl) was kept constant in one side of the cell, C1, at 1.10 M was chang...

Separation of formic, acetic, and propionic acids from the aqueous stream using membrane solvent extraction has been studied using three different membrane contactors made of polysulfone (PS), polyethersulfone (PES), and polyvinylidene fluoride (PVDF) using two different solvents; including ethyl acetate (EA) and diisopropyl ether (DIPE). The efciency of the membrane and e...

Background Acute blood purification (ABP) therapy is used regularly in the clinical setting and reportedly alleviates organ failure associated with severe systemic inflammatory responses, leading to reduced mortality. The present study aimed to determine whether there is a difference in efficacy between polysulfone (PS) membranes, which are currently used regularly in the clinical setting, and ...

PURPOSE A new method for the measurement of ultraviolet radiation that reaches the surface of the eye is described. METHODS The technique uses contact lenses produced from the ultraviolet-sensitive plastic polysulfone. Two types of polysulfone contact lenses (9 mm and 12 mm in diameter) were manufactured from a polysulfone rod. The 9-mm polysulfone contact lens could be calibrated and used to...

In vitro experiments have related anaphylactoid reactions in patients treated with angiotensin-converting enzyme (ACE) inhibitors during dialysis with AN69 membranes to excessive bradykinin generation using this negatively charged dialysis membrane. In the present clinical trial plasma bradykinin levels were followed during the early phase of dialysis in 10 patients, not being treated with ACE ...